in neat (no solvent)
in vac. (10**-5 torr); sealed quartz glass tube, two-zone electrical furnace (900°C zone and 800°C zone; one week); annealing of single crystals (400°C in Ar and O2 flow);
参考文献
Zheng; Kawae; Tanaka; Suzuki; Xu
Journal of Thermal Analysis and Calorimetry, 1999 , vol. 57, # 3 p. 853 - 858
